Metallic alloy



- the electrodes.

Patented July 16, 1929.

UNITED STATES PATENT OFFICE.

HENRY A. BEER-ENS, OF EAST ST. LOUIS, ILLINOIS, ASSIGNOR OF ONE-THIRD TOCLARK NIXON AND ONE-THIRD '10 ILLINOIS.

EDWARD E.

MILLER, BOTH OF EAST ST. LOUIS,

METALLIC ALLOY.

1T0 Drawing.

This invention relates to improvements in metal alloys.

An object of the invention is to provide a metal alloy adapted primarilyfor making electrodes to be used in connection with elec tric heatersfor heating water or other liquids that do not chemically attack themetals comprising the alloys.

While the primary use is for making of electrodes for the purposesstated, it should be understood that the use is not limited to thispurpose, but that the alloy is intended for any technical use for whichit may be found suitable.

The alloy comprises tin, copper, lead, bismuth and antimony. Inpreparing the alloy the relative percentage of each ingredicnt may bevaried to a considerable extent and the limits of the variouspercentages by weight may be tabulated. as follows:

Tin 2 to 10% Copper 4% to 2% Lead "10% to 25% Bismuth 5% to 20% Antimonyby difference The several ingredients are mixed by melting the highestmelting point ingredient and adding the remaining ingredients insequence according to their decreasing melting points.

The resultant alloy is a crystalline metal that may be readily cast inmolds to form The electrodes when used in electric heating apparatus arenot electrolyzed by the current passing from one electrode to the otherin the liquid to be heated.

A preferred formula for producing the alloy is as follows:

Application filed October 26, 1928. Serial No. 315,355.

Tin 6% by weight Copper of 1% by weight Lead 15% by weight Bismuth 10%by weight Antimony by difference While the preferred formula is statedas one producing a highly satisfactory alloy purpose mentioned, itshould be understood that the variations of percentages within thelimits he'reinbefore specified mav be used to accomplish the productionof air al1oy having the general characteristics mentioned.

I do not limit myself, therefore, to exact proportions, but what I claimand desire to secure by Letters Patent is l. A metallic alloy comprisingthe followng ingredients substantially in the following proportions byweight, namely: tin, 6% copper, one-half of 1%; lead, 15% bismuth, 10%and antimony, by difference:

2. A metallic alloy comprising, by weight, tin 2% to 10%; copper 6-562%: lead 10% to 25%; bismuth 5% to 20%; and antimony, by difference.

weight, tin 6%; bismuth 10%;

HENRY A. BEHRENS.

